Rogan Earth Month PromoWhat: Eco-conscious designer Rogan is celebrating Earth Month with a special 25% off discount on select alpaca bamboo knits for him and her. Be sure to check out their latest store redesign, as well as the rest of their spring line for him and her. When: Now until the end of AprilWhere: Rogan Bouwerie, 330 Bowery (at the corner of Bond Street); 646-827-7567; or shop online at rogannyc.com.

Louis Féraud Sample SaleWhat: French couture line Louis Féraud is having a spring sample sale. Take advantage of 75% - 90% markdowns on select silk dresses, tops, shorts, and more.When: Tuesday, April 6, through Friday, April 9, from 9 to 7 p.m.; and Saturday, April 10, from 11 to 7 p.m.Where:Louis Féraud Sample Sale at Misorena Limited, 260 5th Avenue, (between 28th and 29th streets); 212-725-5400.

Kiki de Montparnasse Sample SaleWhat: Sexy lingerie boutique Kiki de Montparnasse is inviting you to their first-ever sample sale. Stop by their SoHo boutique for up to 75% off one-of-kind and past season merch, vintage goods, apothecary faves, and more. Plus, score 20% off their current in-store styles.When: Now through Sunday, April 11, from 11 to 8 p.m.Where:Kiki de Montparnasse, 79 Greene Street, Private Salon, (between Spring and Broome streets); 212-965-8150.

Hayden-Harnett Cheap Thrills Pop-UpWhat: The ladies at Hayden-Harnett are offering some cheap thrills with a month-long shop-in-shop. Head to one of their two NYC locales for up to 80% off clothing from friends Eskell, Yegang Yoo, Sarah Yu, as well as their own Hayden-Harnett line.When: Open through Monday, April 26Where: Cheap Thrills Pop-Up at both Hayden-Harnett locations, 253 Elizabeth Street (between Houston and Prince streets); 212-334-2247; and 211 Franklin Street (at Freeman Street); Brooklyn; 718-349-2247.

New World Order SaleWhat: East Village boutique New World Order is taking new spring markdowns on their gorgeous vintage designer offerings. Check out 30% to 70% discounts on Lanvin, Balenciaga, Oscar de la Renta, Givenchy, YSL, and more. When: Ongoing sale; store open Wednesday through Sunday, from 1 to 8 p.m.Where:New World Order , 13 Avenue B (between 2nd and Houston streets); 212-777-3600.

Robert Geller Key Pop-up ShopWhat: Designer Robert Geller has launched his very own pop-up shop in the L.E.S. The temporary store features an array of classic Geller coats and jackets, Assembly New York's vintage-inspired collection, as well as vintage knick-knacks, books, and art.When: Open through Thursday, April 15; daily from noon to 9 p.m.Where: The Key Shop, 129 Rivington Street (at Norfolk Street); no phone.